DURABILITY OF STRUCTURAL CONCRETE UNDER THE EFFECT OF MULTI-FACTORS OF FATIGUE LOADING AND ENVIRONMENTAL FACTORS

Jiang Jinyang; Sun Wei; Li Wenting; Wang Jing

doi:10.13204/j.gyjz201011002

Volume 40 Issue 11

May 2015

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Jiang Jinyang, Sun Wei, Li Wenting, Wang Jing. DURABILITY OF STRUCTURAL CONCRETE UNDER THE EFFECT OF MULTI-FACTORS OF FATIGUE LOADING AND ENVIRONMENTAL FACTORS[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 6-8. doi: 10.13204/j.gyjz201011002

Citation:

Jiang Jinyang, Sun Wei, Li Wenting, Wang Jing. DURABILITY OF STRUCTURAL CONCRETE UNDER THE EFFECT OF MULTI-FACTORS OF FATIGUE LOADING AND ENVIRONMENTAL FACTORS[J]. INDUSTRIAL CONSTRUCTION, 2010, 40(11): 6-8. doi: 10.13204/j.gyjz201011002

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DURABILITY OF STRUCTURAL CONCRETE UNDER THE EFFECT OF MULTI-FACTORS OF FATIGUE LOADING AND ENVIRONMENTAL FACTORS

doi: 10.13204/j.gyjz201011002

1.
Jiangsu Key Laboratory of Construction Materials,Southeast University,Nanjing 211189,China

Received Date: 2010-07-15
Publish Date: 2010-11-20

Abstract

Abstract

From the entire process of deteriorated performance of bending fatigue damage,combined with residual strain and accumulated energy release,the second linear and steadily developing phase was described,which almost occupies 80% of the whole fatigue life.Aimed at the second phase of fatigue damage,the durability of structural concrete under the effect of multi-factors of fatigue loading and environmental factors was investigated mainly in the paper.As the residual strain exceeds 60 10-6,both the diffusion coefficient of chloride ion and the air permeability coefficient increased with the increment of residual strain.Especially,when the residual strain is 120 10-6,the corresponding coefficient raised 10 times.In the case of freeze-thaw cycles,there is also the same tendency.Therefore,the values of residual strain from 30 10-6-60 10-6 and its 120 10-6 are considered as the starting range and the accelerating point of affecting the durability of structural concrete,respectively.
- fatigue damage,
- chloride ion diffusion coefficient,
- freezing-thawing cycle

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References(5)

References

Mitsuru Saito,Hiroshi Lshimori.Chloride Permeability of ConcreteUnder Static and Repeated Compressive Loading[J].Cement andConcrete Research,1995,25(4):803-805.

[2] 陈拴发,高蕾.高性能混凝土腐蚀疲劳评价指标研究[J].西安建筑科技大学学报,2005,37(2):265-269.

[3] Eleni Sofia Lappa.High Strength Fibre Reinforced Concrete Staticand Fatigue Behaviour in Bending[D].Duitsland: TechnischeUniversiteit Delft,2007.

[4] 洪锦祥.含气量与冻融损伤对混凝土疲劳性能的影响[D].南京:东南大学,2007.

[5] 蒋金洋,孙伟,王晶.弯曲疲劳载荷作用下结构混凝土的抗氯离子扩散性能研究[J].东南大学学报,2010,40 (2):362-366.

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